General Tools and Instruments IRT105 - Manual (Page 6)

Figure 2 shows the icons and text that may appear on the
display. Familiarize yourself with the locations of these
controls and the meanings of these icons before moving on to
the setup and operating instructions.
Fig. 2.
All possible display
indicators and
their meanings
A. Low Battery icon
B. Laser Enabled icon
C. Displaying highest measurement
D. Displaying lowest measurement
E. Operating in emissivity selection mode
F. Operating in measurement lock mode
G. Celsius unit selected
H. Fahrenheit unit selected
I. Measured value
SETUP INSTRUCTIONS
INSTALL TWO BATTERIES
Two CR2032 batteries (included) must be installed in separate
compartments in the back of the IRT105 (callouts G and H of
Fig. 1) to activate its thermometer and laser pointer. To open
either compartment, place the tips of your thumb and index
finger against the bumps on the round compartment cover
and turn clockwise. Insert each battery so the writing
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